General Description

The AS1106 and the AS1107 are compact display drivers for 7-segment numeric displays of up to 8 digits. The devices can be programmed via SPI, QSPI, and Microwire as well as a conventional 4-wire serial interface. The devices include an integrated BCD code-B/HEX decoder, multiplex scan circuitry, segment and display drivers, and a 64-bit memory. Internal memory stores the LED settings, eliminating the need for continuous device reprogramming.

Key Features

10MHz SPI-, QSPI-, Microwire-Compatible Serial I/O

Individual LED Segment Control

Segment Blinking Control (can be synchronized across multiple drivers)

Hexadecimal- or BCD-Code/No-Decode Digit Selection

3µA Low-Power Shutdown Current (typ; data retained)

Extremely Low Operating Current 0.5mA in Open Loop

Digital and Analog Brightness Control

Display Blanked on Power-Up

Drive Common-Cathode LED Displays

Low-EMI Low Slew-Rate Limited Segment Drivers (AS1107)

Supply Voltage Range: 2.7 to 5.5V

Software Reset

Optional External Clock

Packages:

  - 24-pin DIP

  - 24-pin SOIC

Applications

The AS1106 and AS1107 are ideal for bar-graph displays, instrument-panel meters, LED matrix displays, dot-matrix displays, set-top boxes, white goods, professional audio equipment, medical equipment, industrial control lers and panel meters.